Pith Number

pith:LDMLK2WM

pith:2014:LDMLK2WMQRCOUOKGKSFO4GS6AV

not attested not anchored not stored refs pending

The Sylvester equation and integrable equations: I. The Korteweg-de Vries system and sine-Gordon equation

Da-jun Zhang, Dan-dan Xu, Songling Zhao

arxiv:1401.5949 v3 · 2014-01-23 · nlin.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDMLK2WMQRCOUOKGKSFO4GS6AV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:44:08.324702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58d8b56acc8444ea3946548aee1a5e054cb61165b45118d44c07f86c378ceadb

Aliases

arxiv: 1401.5949 · arxiv_version: 1401.5949v3 · doi: 10.48550/arxiv.1401.5949 · pith_short_12: LDMLK2WMQRCO · pith_short_16: LDMLK2WMQRCOUOKG · pith_short_8: LDMLK2WM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LDMLK2WMQRCOUOKGKSFO4GS6AV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 58d8b56acc8444ea3946548aee1a5e054cb61165b45118d44c07f86c378ceadb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b667ca3448792e800cdb4007cacb777dce387530300583b1a2866dcb5c26594b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2014-01-23T12:05:57Z",
    "title_canon_sha256": "e3cf0993f699b06ffd0de133391612dfe1791b47b2e10310fb3091c3aed1c1a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5949",
    "kind": "arxiv",
    "version": 3
  }
}